US2017276524A1PendingUtilityA1

Flow rate detecting device

38
Assignee: SEIKO EPSON CORPPriority: Mar 24, 2016Filed: Mar 17, 2017Published: Sep 28, 2017
Est. expiryMar 24, 2036(~9.7 yrs left)· nominal 20-yr term from priority
Inventors:Shuji OtsukaKazumi ArugaHidenori UsudaSeiichi Taniguchi
B41J 2/195G01F 1/6847G01F 1/684G01F 5/00B41J 2/175
38
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Claims

Abstract

A flow rate detecting device according to an aspect of the invention includes a pipe which includes a bent portion and through which fluid is passed; two temperature detecting portions which detect the temperature of the fluid in the pipe; and a temperature changing portion which changes the temperature of the fluid in the pipe at an intermediate position in which distances between each of the two temperature detecting portions and the intermediate position are equidistant. The intermediate position is positioned in the bent portion in the pipe, and the bent portion is formed to be line symmetric with respect to a straight line passing through the intermediate position.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A flow rate detecting device, comprising:
 a pipe which includes a bent portion and through which fluid is passed;   two temperature detecting portions which detect the temperature of the fluid in the pipe; and   a temperature changing portion which changes the temperature of the fluid in the pipe at an intermediate position in which distances between each of the two temperature detecting portions and the intermediate position are equidistant,   wherein the intermediate position is positioned in the bent portion in the pipe, and   wherein the bent portion is formed to be line symmetric with respect to a straight line passing through the intermediate position.   
     
     
         2 . The flow rate detecting device according to  claim 1 ,
 wherein the bent portion has a U shape.   
     
     
         3 . The flow rate detecting device according to  claim 1 , further comprising:
 a shielding portion,   wherein at least a portion of the pipe and the two temperature detecting portions are covered by the shielding portion.   
     
     
         4 . The flow rate detecting device according to  claim 3 ,
 wherein the shielding portion shields electromagnetic waves.   
     
     
         5 . The flow rate detecting device according to  claim 3 ,
 wherein the shielding portion shields heat.   
     
     
         6 . The flow rate detecting device according to  claim 1 ,
 wherein the temperature changing portion heats the fluid.   
     
     
         7 . The flow rate detecting device according to  claim 1 ,
 wherein the temperature changing portion cools the fluid.   
     
     
         8 . The flow rate detecting device according to  claim 1 ,
 wherein the temperature detecting portions detect the temperature of the fluid without contact.   
     
     
         9 . The flow rate detecting device according to  claim 1 ,
 wherein the pipe has infrared transmittance.   
     
     
         10 . The flow rate detecting device according to  claim 1 ,
 wherein the pipe has heat conductivity lower than that of the fluid.

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